电感耦合等离子体发射光谱法测定钴镍矿中银铜铅锌铝铁镁

Determination of silver,copper,lead,zinc,aluminum,iron,magnesium in cobalt nickel ore by inductively coupled plasma atomic emission spectrometry

试样经盐酸-硝酸-氢氟酸-高氯酸混合酸消解,硝酸提取定容,采用电感耦合等离子体发射光谱法同时测定试液中银、铜、铅、锌、铝、铁、镁7个组分浓度,经计算求得组分的含量。通过试验确定了基体元素对待测组分的光谱干扰系数,与国标方法进行比对,测定结果两者相符。各组分方法检出限银为0.02mg/kg、铜为0.8mg/kg、铅为2mg/kg、锌为0.6mg/kg、铝为5mg/kg、铁为14mg/kg、镁为8mg/kg。测定范围银为0.08mg/kg~1000mg/kg、铜为4mg/kg~0.25%、铅为8mg/kg~0.25%、锌为3mg/kg~0.25%、铝为0.002%~10%、铁为0.006%~10%、镁为0.004%~10%。标准物质测定结果的准确度精密度和正确度均满足日常要求。

The sample was digested by hydrochloric acid nitric acid hydrofluoric acid perchloric acid mixed acid,extracted by nitric acid to constant volume,and the concentrations of seven components in the test solution,silver,copper,lead,zinc,aluminum,iron,and magnesium,were simultaneously determined by inductively coupled plasma emission spectrometry.The content of the components was calculated.The spectral interference coefficient of the matrix element to be measured was determined through experiments,and compared with the national standard method.The measurement results were consistent.The detection limit for each component method is 0.02mg/kg for silver,0.8mg/kg for copper,2mg/kg for lead,0.6mg/kg for zinc,5mg/kg for aluminum,14mg/kg for iron,and 8mg/kg for magnesium.The measurement range is 0.08mg/kg~1000mg/kg for silver,4mg/kg~0.25% for copper,8mg/kg~0.25% for lead,3mg/kg~0.25% for zinc,0.002~10% for aluminum,0.006~10% for iron,and 0.004~10% for magnesium.The accuracy,precision,and accuracy of the standard substance determination results meet daily requirements.